Question

solve the following pair of linear equation by the substitution method. s-t=3. ; s/3+ t/2=6​

Answer 1

Step-by-step explanation:

s - t = 3

s = t+3 ----(1)

2s + 3t = 36---(2)

from equation (1) & (2)

2(t+3) + 3t = 36

2t + 6 + 3t = 36

5t = 30

t = 6

s = 6+3 = 9

Answer 2

Step-by-step explanation:

s-t=3

s=3+t

s/3+t/2=6

3+t/3+t/2=6

6+2t+3t=36

5t=36-6

t=30/5

t=6

s=9